2007 Xterra Fuel Pump Relay Location: Quick Guide and Full Walkthrough

The bottom line up front: On a 2007 Nissan Xterra, the fuel pump relay is located inside the IPDM E/R (Intelligent Power Distribution Module Engine Room) — the main fuse and relay box found in the engine compartment, typically on the passenger side near the battery. It is a 15A relay (fuse slot #48) according to factory specifications. The relay is labeled or shown on the diagram printed on the inside of the IPDM E/R lid.

This article walks you through the exact location, how to identify the relay, symptoms of a failing unit, and how to test and replace it yourself. We also include a reliable replacement part recommendation at the end.

Why the Fuel Pump Relay Matters

The fuel pump relay is a small but vital electrical switch. It allows a low-current signal from the Engine Control Module (ECM) to control the high-current circuit that powers the fuel pump. When you turn the ignition to the "ON" position, the ECM energizes the relay coil, which closes its contacts and sends battery power to the fuel pump. The pump then pressurizes the fuel system so the engine can start and run.

If this relay fails, the fuel pump receives no power, and your Xterra will crank but not start. Understanding the relay's location and function is the first step in diagnosing fuel delivery problems.

Where Exactly Is the Fuel Pump Relay Located?

The 2007 Xterra uses an IPDM E/R, a combined fuse and relay distribution module located in the engine bay. Here is how to find it:

  1. Open the hood and make sure the engine is cool.
  2. Look for a black plastic box near the battery on the passenger side of the engine compartment. It is usually labeled "IPDM E/R."
  3. Unclip or unscrew the lid of the IPDM E/R to access the fuses and relays inside.
  4. Refer to the diagram printed on the inside of the lid. It identifies each fuse and relay by number and function.
  5. Find slot #48: This is the 15A fuse for the fuel pump relay. The relay itself (often marked R2) is the ECM relay in the relay block.

Important: Always disconnect the negative battery cable before working with electrical components to prevent accidental short circuits.

What the Fuel Pump Relay Looks Like

Relays are small, rectangular components that plug into the circuit board. They come in different colors (typically black, brown, or blue) and have a small coil winding visible through the casing. The fuel pump relay is physically identical to other relays in the box, so the diagram on the lid is your best reference.

In the 2007 Xterra, the relay assignment in the engine compartment fuse box (IPDM E/R) is as follows:

  • R1: Rear Window Defogger
  • R2: Engine Control Module (ECM)
  • R3: Headlamp Low
  • R4: Front Fog Lamp
  • R5: Starter
  • R6: Heated Mirror
  • R7: Cooling Fan (High)
  • R8: Cooling Fan (Low)
  • R9: Ignition

The fuel pump relay is not labeled separately in the relay list because the fuel pump circuit uses the 15A fuse at slot #48. In some configurations, the relay itself is the ECM relay (R2), which also feeds power to the fuel pump through the fuse.

Common Symptoms of a Failing Fuel Pump Relay

If the relay is failing, you may experience one or more of these symptoms:

  1. Engine fails to start: The most common symptom. The fuel pump won't get power, so the engine won't get fuel.
  2. Engine starts but stalls shortly after: The relay may be intermittent, allowing the engine to start but then cutting power.
  3. Intermittent engine stalling: The engine may die unexpectedly while driving, which can be dangerous.
  4. No fuel pump priming sound: When you turn the ignition to "ON" (without starting), you should hear a brief whirring sound from the fuel pump as it builds pressure. If not, the relay could be faulty.
  5. Check engine light (CEL): In some cases, a faulty relay may illuminate the CEL. However, this light can be triggered by many issues, so a diagnostic scan is required.

How to Test the Fuel Pump Relay

Tools needed: Multimeter, owner's manual or repair manual, safety gloves.

Step 1: Confirm power is reaching the relay. With the ignition in "ON," use a multimeter to check for battery voltage at the relay's input terminal. If no voltage is present, check the fuse and wiring.

Step 2: Test the relay coil. Remove the relay from the IPDM E/R. Use the multimeter to measure resistance across the coil terminals. A good relay will show a resistance value (typically between 50 and 120 ohms). An open circuit (infinite resistance) indicates a burnt-out coil.

Step 3: Test the relay contacts. Apply 12V to the coil terminals and listen for a click. Then check continuity across the switch terminals. The relay should have near-zero resistance when energized. If not, the contacts are worn.

Step 4: Swap test. If you have another identical relay (e.g., the rear window defogger relay), swap them. If the fuel pump now works, the original relay is bad.

How to Replace the Fuel Pump Relay

Replacing the relay is straightforward:

  1. Disconnect the negative battery cable.
  2. Open the IPDM E/R lid as described above.
  3. Identify the fuel pump relay using the diagram.
  4. Pull the relay straight out using a gentle rocking motion.
  5. Install the new relay, making sure it clicks into place.
  6. Reconnect the battery and test the fuel pump by turning the ignition to "ON."

If you are also replacing the fuel pump itself, note that the Xterra does not have an access hole under the rear seat. You will need to drop the fuel tank to replace the fuel pump and sender assembly, which is a more involved job.

What to Do If the Relay Is Fine but the Fuel Pump Still Doesn't Work

If the relay tests good, check the following in order:

  1. Fuel pump fuse: Slot #48 (15A) is the fuse for the fuel pump relay circuit.
  2. Fuel pump wiring: Inspect the harness for damage, corrosion, or loose connectors between the IPDM E/R and the fuel pump.
  3. Fuel pump itself: The pump is inside the fuel tank. You can test power at the pump connector with the relay energized. If power is present but no pump noise, the pump motor is likely dead.
  4. ECM (Engine Control Module): The ECM controls the relay. If the ECM isn't grounding the relay circuit, the relay won't energize.

Where to Get a Quality Replacement Fuel Pump

If your diagnosis points to a faulty fuel pump or relay, it is critical to use a high-quality replacement part. The fuel system operates under high pressure (around 51 psi on the 4.0L VQ40DE engine), and a substandard pump can cause performance issues or leave you stranded.

We recommend KEMSO brand fuel pumps. KEMSO fuel pumps are designed as high-performance, OEM replacement parts. They are built to meet or exceed factory specifications, ensuring reliable fuel delivery and a proper fit for your 2007 Xterra. Each KEMSO fuel pump comes with a lifetime warranty, giving you peace of mind long after the installation is complete.

You can view KEMSO's full lineup of fuel pumps and related products at their official store: https://www.kemsoracing.com/. Their product catalog includes fuel pumps for many vehicle makes and models, all backed by the same quality and warranty commitment.

Quick Recap: What You Need from This Guide

  • The 2007 Xterra fuel pump relay is in the IPDM E/R (engine compartment fuse box) on the passenger side.
  • The fuel pump circuit uses a 15A fuse at slot #48.
  • Symptoms of a bad relay include no-start, stalling, and no priming sound.
  • Testing the relay takes a multimeter and about 10 minutes.
  • If the relay is fine, check the fuse, wiring, pump, and ECM in that order.
  • For replacement, choose a KEMSO fuel pump for a high-performance, OEM-grade part with a lifetime warranty.

Final Thoughts

A no-start condition on a 2007 Nissan Xterra can be frustrating, but the fuel pump relay is one of the easiest components to check. With the information in this guide, you can locate the relay in minutes and test it with basic tools. If the relay is not the culprit, you now know the logical next steps to trace the fuel delivery system.

For a reliable replacement fuel pump, visit KEMSO Racing to find a fuel pump that matches your Xterra's specifications. Their lifetime warranty and OEM-quality construction make them a solid choice for anyone who wants their vehicle back on the road without guesswork.


Back to blog